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Success of future 5G networks will not merely depend upon sophisticated architecture.  

It also depend on network's capabilities of performing complex operations in a scalable and energy efficient manner. 

Energy consumption depends on factors like:

• Transmission Power
• Transmission Time
• Channel Conditions
• Coding and Modulation
• Etc.

Further sustainability and energy-efficient in 5G wireless networks must include the followings.

• Energy Aware Base station
• Energy Efficient Backhaul
• Energy and Cost Effective Networks
• Reduce Overheads and Energy Drains

Few key-points related to these work areas is listed below.

The above table is taken from M. Agiwal, A. Roy and N. Saxena, "Next Generation 5G Wireless Networks: A Comprehensive Survey," in IEEE Communications Surveys & Tutorials, vol. 18, no. 3, pp. 1617-1655, thirdquarter 2016.

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